package com.lh.common.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;

/**
 * @ProjectName: sms-service
 * @Package: com.hebao.sms.utils
 * @ClassName: HttpClient
 * @Description: java类作用描述
 * @Author: xiaohuzi
 * @CreateDate: 2018/9/13 11:36
 * @UpdateUser: 更新者
 * @UpdateDate: 2018/9/13 11:36
 * @UpdateRemark: 更新说明
 * @Version: 1.0
 */
public class HttpClient {
    private static final int OK_CODE = 200;
    private static Logger logger = LoggerFactory.getLogger(HttpClient.class);
    public static String doGet(String httpurl) throws IOException {
        HttpURLConnection connection = null;
        InputStream is = null;
        BufferedReader br = null;
        // 返回结果字符串
        String result = null;
        try {
            // 创建远程url连接对象
            URL url = new URL(httpurl);
            // 通过远程url连接对象打开一个连接，强转成httpURLConnection类
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接方式：get
            connection.setRequestMethod("GET");
            // 设置连接主机服务器的超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取远程返回的数据时间：60000毫秒
            connection.setReadTimeout(60000);
            // 发送请求
            connection.connect();
            // 通过connection连接，获取输入流
            if (connection.getResponseCode() == OK_CODE) {
                is = connection.getInputStream();
                // 封装输入流is，并指定字符集
                br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
                // 存放数据
                StringBuffer sbf = new StringBuffer();
                String temp = null;
                while ((temp = br.readLine()) != null) {
                    sbf.append(temp);
                }
                result = sbf.toString();
            }else {
                logger.error("请求错误:{},{}",connection.getResponseCode(),connection.getContent());
            }
        } catch (MalformedURLException e) {
            logger.error("MalformedURLException:",e);
        } catch (IOException e) {
            logger.error("IOException:",e);
        } finally {
            // 关闭资源
            if (null != br) {
                try {
                    br.close();
                } catch (IOException e) {
                    logger.error("IOException:",e);
                }
            }

            if (null != is) {
                try {
                    is.close();
                } catch (IOException e) {
                    logger.error("IOException:",e);
                }
            }
            connection.disconnect();// 关闭远程连接
        }
        return result;
    }

    /**
     * @param httpUrl         请求地址
     * @param param           请求参数
     * @param requestProperty 请求头参数
     * @return
     */
    public static String doPost(String httpUrl, String param, Map<String, String> requestProperty) {

        HttpURLConnection connection = null;
        InputStream is = null;
        OutputStream os = null;
        BufferedReader br = null;
        String result = null;
        try {
            URL url = new URL(httpUrl);
            // 通过远程url连接对象打开连接
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接请求方式
            connection.setRequestMethod("POST");
            // 设置连接主机服务器超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取主机服务器返回数据超时时间：60000毫秒
            connection.setReadTimeout(60000);

            // 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
            connection.setDoOutput(true);
            // 默认值为：true，当前向远程服务读取数据时，设置为true，该参数可有可无
            connection.setDoInput(true);

            // 设置请求头参数
            setRequestProperty(connection, requestProperty);

            // 通过连接对象获取一个输出流
            os = connection.getOutputStream();
            // 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的
            os.write(param.getBytes());
            // 通过连接对象获取一个输入流，向远程读取
            if (connection.getResponseCode() == OK_CODE) {
                is = connection.getInputStream();
                // 对输入流对象进行包装:charset根据工作项目组的要求来设置
                br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

                StringBuffer sbf = new StringBuffer();
                String temp = null;
                // 循环遍历一行一行读取数据
                while ((temp = br.readLine()) != null) {
                    sbf.append(temp);
                }
                result = sbf.toString();
            }else {
                logger.error("请求错误:{},{}",connection.getResponseCode(),connection.getContent());
            }
        } catch (MalformedURLException e) {
            logger.error("MalformedURLException",e);
        } catch (IOException e) {
            logger.error("IOException",e);
        } finally {
            // 关闭资源
            if (null != br) {
                try {
                    br.close();
                } catch (IOException e) {
                    logger.error("IOException",e);
                }
            }
            if (null != os) {
                try {
                    os.close();
                } catch (IOException e) {
                    logger.error("IOException",e);
                }
            }
            if (null != is) {
                try {
                    is.close();
                } catch (IOException e) {
                    logger.error("IOException",e);
                }
            }
            // 断开与远程地址url的连接
            connection.disconnect();
        }
        return result;
    }

    private static void setRequestProperty(HttpURLConnection connection, Map<String, String> requestProperty) {
        // 设置传入参数的格式:默认为 application/x-www-form-urlencoded
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        // 设置鉴权信息：Authorization: Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0
        connection.setRequestProperty("Authorization", "Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0");
        if (null != requestProperty && !requestProperty.isEmpty()) {
            Iterator<String> iterator = requestProperty.keySet().iterator();
            while (iterator.hasNext()) {
                String key = iterator.next();
                connection.setRequestProperty(key, requestProperty.get(key));
            }
        }

    }

    /**
     * @param httpUrl 请求地址
     * @param param   请求参数
     * @return
     */
    public static String doPost(String httpUrl, String param) {
        return doPost(httpUrl, param, null);
    }
}
